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another officer, a firefighter, whoever. They can go on the radio and say, hey Chuck, your key is open and you should be able to hear that transmission with your key being open so you can unkey. It doesn't happen all the time, but theoretically the system will allow it. I've heard that no more. Yeah, now, so there are some other issues. So the codecs I was talking about. So DMR uses an MB2 technology, very efficient. It's widely used in commercial and Amgiers. Fusion, which is amateur radio. That's quote unquote, the Asus version of C4 FM. That's MB2 as well. And it's proprietary, but it uses the same voice chip as DMR. Apto 25, that's an IMBE. So it's a phase one or an MB phase two codec, depending on what it is. So phase two uses the modern MB2 codec.